Nilfisk-ALTO BK 900 Bedienungsanleitung

BK 900

303000049

Betriebsanleitung....................................................3

Operating Instructions...........................................10

Notice d’utilisation.................................................17

Gebruiksaanwijzing...............................................24

Instrucciones de manejo.......................................31

BK 900

Total width with side brush ............. mm .....................................790

Total height without/with handle .... mm ........................... 390/1,060

Total length without handle ............ mm .................................. 1,030

Working width with side brush ....... mm .....................................670

Working width with roller brush ..... mm ..................................... 480

Weight ........................................... kg .......................................... 25

Dirt collecting tank capacity ............ l.............................................40

Sweeping capacity .......................... m²/h .................... approx. 2,680

Description

1 Description

1.1 General view 1 Side brush

2 Handwheel with knurled nut

for side brush adjustment

3 V-belt

4 Collecting tank handle

5 Handle

6 Handwheel for brush roller adjustment

1.1.1 Intended use This machine is designed only for

sweeping on solid, level surfaces.

Any other form of use is regarded

as contrary to its intended use.

The manufacturer

will accept no liability for any

damage or injury resulting from

such forms of use.

Unauthorised modifications to the

sweeping machine also relieve

the manufacturer

of any liability for resulting

damage or injury.

The brush sweeping machine

is not suitable for use in

sweeping up inflammable,

explosive, toxic, carcinogenic

or any other form of health-

endangering substances and

materials.

1.2 Technical data

BK 900

Operation

2 Operation

2.1 Important safety

instructions

Do not sweep up burning or

smouldering objects, e.g.

cigarettes, matches or similar

objects.

When removing any glass, metal

or similar materials from the dirt

collecting tank,

wear sturdy gloves to avoid the

risk of injury.

The dirt collecting tank should be

emptied after every use of the

sweeping machine.

The sweeping machine is not

suitable for use with liquids.

Do not use the sweeping

machine in the immediate

vicinity of heat sources (fire,

radiators, heater fans or similar

heat radiating equipment).

Use only original Alto accessories

and spare parts.

2.2 Assembly The handle and side brushes

must be fitted.

• Unpack the machine and

place it on a level surface.

Do not dispose of packaging

until all parts have been

removed.

2.2.1 Mounting the handle • Mount handle on housing at

left and right with wing nuts

(3). Only tighten wing nuts

hand-tight!

• Handle can be mounted in

position 1 or 2, depending on

height of user.

BK 900

Operation

2.2.2 Fitting the side brush

NOTE!

Bent bristles can be straightened

by laying the side brush in

lukewarm water.

• Remove dirt collecting tank.

NOTE!

Always stand tank on feet on

front side to prevent damage

to the rubber strip.

• Push side brush (1) onto shaft

and tighten hexagon bolt (2)

with open-end spanner

without damaging hub.

• Lay V-belt in groove of right-

hand wheel (3).

• Mount side brush arm with

pin (push in from outside) and

retaining clip (4).

Swivel down arm.

CAUTION!

Side brush must rotate anti-

clockwise when sweeper is

pushed forward.

2.3 Starting operation and

functional check

2.3.1 Mounting dirt collecting

tank

• Place tank on frame and swivel

downward.

• To remove tank, swivel upward

by handle.

2.3.2 Adjusting the side

brushes

• Loosen knurled nut (1) and

turn handwheel (2) until a

maximum of 2/3 of brush

circumference touches

ground. Retighten knurled

nut as anti-twist lock.

BK 900

Operation

No. on

scale

Material

swept Surface

1.5

light, dry

Basic setting

heavy, damp,

sticky

large quantity

smooth

rough,

uneven

2.3.3 Adjusting brush roller •Adjust brush pressure with

handwheel. Adjustment can

be checked on scale next to

right-hand wheel. First follow

our recommendations and

then adapt brush pressure to

wear of brush roller or, if

necessary, to your local

conditions.

NOTE!

Excessively high roller pressure

increases brush wear and

requires greater pushing force.

2.3.4 Functional check •Push the machine at normal

walking speed over the

surface to be cleaned:

The cleaning capacity is

dependent on the working speed

(number of revolutions of

the brush roller).

The side brush allows edges and

corners to be swept clean.

•Check the sweeping result

and then correct the brush

pressure if necessary.

2.4 Supervision of

operation CAUTION!

String, wire, packing tape

and similar long objects

should be picked up from

the floor by hand and not

swept up with the sweeping

machine:

This will help to maintain the

sweeping capacity of the

machine and prevent machine

damage caused by jamming of

the drive.

Empty the dirt collecting tank at

regular intervals. Sweeping is no

longer possible when the tank is

full.

2.5 After completing work •Empty the dirt collecting tank.

To transport or for space-saving

storage:

•Swivel up side brush arm

•Loosen wing nuts on handle,

spread handle apart

somewhat and swivel

forward.

BK 900

Maintenance

3 Maintenance

3.1 Important safety

instructions

CAUTION!

Carry out only the maintenance

work described in the operating

instructions.

Contact Alto Service for all other

maintenance work.

Use only original Alto accessories

and spare parts.

3.2 Maintenance and care

3.2.1 Replacing brush roller

•Remove dirt collecting tank.

•Swivel up side brush arm and

tip machine back onto

handle.

•Screw 3 Phillips screws (1) out

of brush roller. Turn brush

roller 180 and screw screws

out of second half.

(sectional drawing)

•Pull drive pin (2) out of brush

roller.

•Install brush roller in reverse

order.

•Refit dirt collecting tank.

Brush roller

Order No. 60642

3.2.2 Replacing side brush •Swivel up side brush arm.

•Unscrew hexagon bolt (2) and

pull out of brush shaft.

•Pull off side brush (1), push on

new side brush and slightly

tighten hexagon bolt without

damaging hub.

•Adjust side brush with

handwheel (see 2.3.2).

Side brush

Order No. 60641

BK 900

Maintenance

3.2.3 Replacing V-belt •Remove dirt collecting tank.

•Swivel up side brush arm and

remove side brush (see 3.2.2).

•Take off washers and guard

plate, remove circlip with

Seeger circlip pliers and pull

belt pulley (1) off shaft (2).

Make sure that drive wedge

(3) does not fall out of shaft.

•Lay new V-belt in belt pulley

groove and reassemble in

reverse order.

•Remount dirt collecting tank.

3.2.4 Tensioning V-belt •Swivel up side brush arm,

unscrew screws (1) on roller

bracket (2) and lift roller

bracket out of rib.

•Swivel roller bracket

(diagram) and push into next

detent.

•Tighten screws, swivel down

brush arm and check belt

tension.

NOTE!

Excessive tensioning of the V-

belt reduces the sweeping

performance and leads to

premature wear.

3.2.5 Sealing strips The sealing strips prevent dust

from escaping during sweeping.

Check them regularly and

replace if damaged.

3.2.6 Greasing pinion Insert two screwdrivers in the

slots of the hub caps and lever

off evenly. Remove circlip from

wheel axle and pull off wheel.

Grease wheel axle and pinion.

Mount wheel in reverse order.

Watch marking when mounting

the hub cap.

BK 900

Maintenance

3.3 Troubleshooting CAUTION!

With the exception

of the adjustments

and setting

explained in this

operating manual, the user

should never try to carry out any

repairs on his/her own.

Leave repairs to a qualified Alto

technician or authorised expert.

The following table will help in

locating and eliminating

operating faults in the

machine. Should it not be

possible to remedy the problem

as described below,

please contact your local Alto

service department.

Problem

‡Machine is difficult to push

‡Poor dirt pick-up performance

Cause

> Brush pressure too high

> Strings or other parts have

become stuck in the brush

roller

> Tank full

> Strings or other parts have

become stuck in the brush

roller

> Side brush worn

> Brush roller worn

Remedy

•Adjust brush pressure as

described in 2.3.3

•Remove the parts

•Empty tank

•Remove the parts

•Replace side brush (see 3.2.2)

•Replace brush roller (see 3.2.1)

3.4 Warranty The warranty and warranty

period are defined in our General

Conditions for Sale

and Delivery.

Subject to changes in the course

of technical innovations.

www.nilfisk-alto.com

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